Thermos-tank and valve therefor



1.0. BEWAN.

THERMOS TANK AND VALVE THEREFOR.

APPLICATION FILED FEB. 15, 1919.

1,327,693, Patented Jan. 13, 1920.

JZzmes QBewan,

attommu JAMES O. BEWAN, OF ROANOKE, A A AMA.

THERMOS-TANK AND VALVE THEREFOR.

Application filed February 15, 1919.

To all whom it may concern:

Be it known that I, JAMES O. BEWAN, a citizen of the United States, residing at Roanoke, in the county of Randolph and the State of Alabama, have invented certain new and useful Improvements in Thermos- Tanks and Valves Therefor, of which the following is a specification.

This invention relates to a portion of a farm or country water supply system, and includes a tank and its air vent valves designed to be employed in connection with the automatic water bucket shown and described in my application executed Nov. 26, 1918.

As shown and described therein water is drawn from a well, discharged into a tank adjacent the well and then conveyed by gravity to the house.

The present invention relates to the tank designed to be placed in the house, preferably in the kitchen, to receive the water from the well tank.

In the accompanying drawings:

Figure 1 is a sectional elevation of the tank.

Fig. 2 is an enlarged sectional view of a pipe arranged at the upper end of the tank.

In the drawings 1 designates a tank inclosed by an outer jacket, a vacuum 3 being formed between the tank and the jacket so that the water will remain practically as cool as when piped from the well, the tank being supported and spaced from the jacket by braces To permit ready filling and discharge of the tank it is necessary to allow the flow of air to and from the tank, but to keep it sealed at other times so as to keep the water as cool as possible until it has been used.

To the upper end of the tank is connected an air pipe 5 which extends through the jacket 2. On this pipe 5 is threaded a short pipe section 6 having a small lateral air inlet 7, normally closed by a flat spring 8 secured on the inside of the pipe and faced with a strip of felt or rubber, to fit over the opening 7 and make an air tight closure.

At the upper end of the pipe is a cage 10 provided in its bottom with one small air vent 10 A perforated end cap 11 fits over the end of the pipe and a ball 12 is placed in the cage.

A combined supply and service pipe 13 controlled by a valve 14 is connected to the lower or bottom portion of the tank.

Specification of Letters Patent.

Patented Jan. 13, 1920.

Serial No. 277,249.

Normally the ball 12 will close the air opening 10 and the spring will close the opening 7.

But on admission of water to the tank the increase of air pressure within the tank will lift the ball and permit escape of air through the cage and cap 11. The ball will again seat itself when the flow of water into the tank ceases. When water is drawn from the tank the exterior atmospheric pressure will open the opening 7 and permit inflow of air to take the place of the discharged water. It will be noted therefore that I automatically control the discharge and admission of air to the tank, said control being maintained or regulated by the flow of water in or out of the tank.

To add to the appearance of the tank and also to aid in excluding dirt and dust from the same I place a ball or spherical cap 15, suitably perforated, over the projecting pipe portion 6.

I also attach to the side of the tank a glass water gage 16 provided with the usual lateral branch pipes 17, shut off valves 18 and drain cook 19. This makes it possible on cold nights to drain the gage and shut off the water supply from the same so that there will be no danger of the water freezing and breaking the gage.

I have omitted showing any special means for supporting the tank as this would be outside the present invention, but it can be supported on legs, on the usual boiler stand on wall brackets, and thus elevated.

For convenience of assembly I have shown pipes 5 and 6 as separated and connected together, but they could be formed in one piece if desired. However by forming them in sections it permits the complete construction of the tank at the factory, in cluding formation of the vacuum, the pipe 6 with the valves being afterward added. By so doing there is avoided having a projecting pipe end while shipping. I have however shown the construction of the one piece form in the discharge pipe 13. It will be obvious that as pipes 5 and 6 might be formed in one piece so pipe 13 might also if desired be in two sections as at the upper end of the tank. This however is merely a matter of convenience in crating for shipment and no claim is made for any specific connection of these pipes.

What I claim is 1. The combination with a thermos tank having a common supply and discharge pipe at its lower end, of an air pipe arranged at the upper end of the tank, said pipe having a lateral air vent and a perforated end cap, a cage arranged in the pipe between the lateral vent and the end cap, a ball valve therein regulating flow of air from the tank through said cage and cap, and a spring flap valve adapted to normally close the lateral opening against admission of air to the tank.

2. An air control system for a water tank comprising an air pipe above the water level, said pipe having a lateral vent, a fiat spring secured within the pipe and normally covering and closing said vent, a cage arranged in the pipe above said spring and having a bottom vent, a ball resting in the cage and normally closing said vent, and a perforated end cap for the upper end of said pipe, as and for the purpose set forth.

In testimony whereof I aflix my signature.

JAMES O. BEWAN. 

